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# Converting Euler's Angles (ZXZ rotation) to spherical system (theta, phi)

2018-10-23 14:51:43

I have a stiffness tensor (6X6 matrix) where each element is a function of three Euler's angles, and hence represents the stiffness of crystal in different orientations.

Since orientation space can be represented by two angles in spherical coordinate system as well (theta, phi), I want to convert three Euler's angles (in ZXZ scheme of axes rotation) to spherical coordinate angles. Would be grateful if someone can help.

thanks